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Ultrathin Pancharatnam–Berry Metasurface with Maximal Cross‐Polarization Efficiency
Author(s) -
Ding Xumin,
Monticone Francesco,
Zhang Kuang,
Zhang Lei,
Gao Dongliang,
Burokur Shah Nawaz,
de Lustrac Andre,
Wu Qun,
Qiu ChengWei,
Alù Andrea
Publication year - 2015
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201405047
Subject(s) - materials science , polarization (electrochemistry) , geometric phase , berry , optoelectronics , condensed matter physics , physics , chemistry , botany , biology
Novel ultrathin dual‐functional metalenses are proposed, fabricated, tested, and verified in the microwave regime for the first time. The significance is that their anomalous transmission efficiency almost reaches the theoretical limit of 25%, showing a remarkable improvement compared with earlier ultrathin metasurface designs with less than 5% coupling efficiency. The planar metalens proposed empowers significant reduction in thickness, versatile focusing behavior, and high transmission efficiency simultaneously.